Sotheby's Einstein on the Theory of Relativity & Audubon's Birds of USA Auction

Vintage Sotheby's "Fine Books and Manuscripts: Einstein on the Theory of Relativity / Audubon's Birds of America" Auction Catalog, December 2, 1987. 193 lots include both black and white and color photos of samples of handwritten letters and manuscripts from royalty, Immanuel Kant, Einstein, Gustave Flaubert, and more, plus a handpainted canvas from Jack Kerourac, and the artwork and written words of many others. Condition: excellent vintage condition.